Question about 1991 Honda Civic

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Small amount of what seems to be engine oil in the radiator over a long period of time

Small amount of what seems to be engine oil in the radiator over a long period time

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  • calebonwheel Jun 01, 2009

    the cooler was pressure tested -ok

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Is it an automatic? If so, you have a leak, in the trans. cooler, that is inside your radiator. Therefore, you need a new radiator

Posted on May 30, 2009

  • Put Merriam May 30, 2009

    Well, sorry if you disagree, is it an automatic?

  • Put Merriam Jun 01, 2009

    Well, I'm glad you had the presence of mind to have that done. So, if it's only over a long period of time............what's your complaint? The complex nature of an internal combustion engine, and the multitude of surfaces, joined only by gaskets, sealed by the torque applied by the last person to do so, leads to the possibility that temperature,operator abuse, and the laws of Murphy.........could lead to "a small amount of oil in the radiator, over a long period of worries".

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I have a slight amount of oil in my radiator, I had this years ago and my dealer fixed it and said it was something small. Anyone know what it maybe or had the same experience. Thanks


This is a concern that requires immediate attention. Oil in the coolant or coolant in the oil is an indication that the integrity of the engine has been compromised and a passage has developed between the oil and coolant.

Installed in some radiators is a transmission coil cooler that is connected usually at the bottom of the radiator by two metal tubes. A failure internally of the radiator could breach the separation.

Head gaskets that have coolant pass through openings can also be a failure allowing the liquids to mix.

Look for coolant in the engine oil.
Check for oil level overfull

Look for steam from exhaust

Hope this helps.

Have repair done ASAP at qualified shop
Water in oil
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Oil in water
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Head Gasket Failure
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Oct 16, 2016 | Cars & Trucks

1 Answer

When i check the oil level in my huyndai avante xd 2006 i found the the oil level is down , no smoke or leak from the car .. What's the Problem ?


All motors will use a small amount of oil over a period of time. It is used by boiling off in the sump from blow by around trhe rings and ring gaps, smoke vapour through the manifold system and general leaks around the engine or sump gasket. It is necessary to lubricate the rings as they are moving. However having said that consumption in excess of 1 liter pre 5000 miles would bear investigation as it will point to engine wear or leaking oil seals

Feb 20, 2013 | Cars & Trucks

1 Answer

Engine runs smooth and the head gasket has been replaced,I already know I need a new radiator..There is a small amount of white smoke at start up,and my oil is milky looking>


milky sump oil is coolant in the sump
could be head gasket
could be the aluminium housing behind the water pump has corroded and leaking water into the sump
that will account for you thinking that you need anew radiator

May 08, 2017 | 1999 Chevrolet Suburban

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My 2000 Sebring convertible has begun to overheat, buck, and knock loudly. There wa a small amount of smoke emitted from under the hood. Water light also went on bkut oil and water were both OK. Wh


SEEMS THAT U HAD A PROBLEM WITH THE RADIATOR.WATER ON IT CAN BE A BAD LINE OR IN THE WORST CASE THE HEAD BLOCK.OVERHEATING CAN DAMAGE THE HEAD SEAL AND START LEAK WATER.ALDO THE TRANS USE A COOLER SYSTEM INTEGRATE WITH THE RADIATOR.

Apr 11, 2012 | 2000 Chrysler Sebring

2 Answers

Driving for 5minutes cars runs hot smoking then shuts off I have antifreeze in the car


Could be that the heater core in the dash is leaking ,or you could have a bad hose or something leaking coolant in the engine compartment and steam is getting sucked into the air ducts.

Mar 28, 2011 | 1994 Chrysler Concorde

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Having issues with a 2000 chevy impala overheating have changed the radiator and the thermostat fans seem to be working ok but overheats at idle in stop and go traffic, after a certain amount of time it...


YOU NEED BLEED COOLANT SYSTEM.CHECK COOLANT LEVEL IN RADIATOR.ADD MORE DEXCOOL UNTIL COOLANT LEVEL IS CLOSE TO RADIATOR SPOUT.CRANK ENGINE LET IDLE UNTIL TOP RADIATOR HOSE GET HOT.WATCH TEMPERATURE GAUGE.IF TEMPERATURE GAUGE START RISING TO HOT ZONE.TURN OFF ENGINE.LET COOL DOWN.USE LARGE RAG SLOWLY OPEN RADIATOR CAP A LITTLE AT A TIME UNTIL ALL PRESSURE RELIEVED.REMOVE RADIATOR CAP.ADD MORE COOLANT.CRANK CAR AGAIN LET IDLE UNTIL TOP RADIATOR GET HOT.KEEP EYE ON TEMP.GAUGE ALSO.WHEN TEMP.GAUGE STOP CLIMBING.YOUR COOLANT SYSTEM BLED.WHEN DONE LET CAR SET A WHILE CHECK COOLANT LEVEL.ALSO FIRST THING IN THE MORNING CHECK COOLANT LEVEL AGAIN.AND BESURE ADD COOLANT IN THE OVERFLOW JUG TO THE COLD MARK.DONT OVER FILL THE COOLANT RESERVOIR JUG.WORK SAFELY DONT GET SCALDED.

Feb 15, 2011 | 2000 Chevrolet Impala

3 Answers

Accidentally added antifreeze to oil instead of


since it was such a small amount of anti freeze and water,anti freeze has a petrolem base and water would have sunk to the bottom of oil pan, change oil and filter and you should be ok

Mar 02, 2010 | 2005 Dodge Charger

2 Answers

2000 Neon with small amount of oil leaking when parked.No oil leaking when put up on rack. Drives car around town seems fine, Drive car for a longer trip and no oil shows up on dipstick. Oil is added and...


When u run your car for a long of time make sure the oil drops down to the oil pan with engine off for about 10 minutes then check oil. If you stop and then immediately u check the oil, oil level will show low, because some oil is at the cylinder head. I think the oil seals for the crankshaft are worn, their one infront of the engine and one behind, where the motor is connected to the transmission. When the head gasket is not good you see oil in the the coolant or coolant in oil and white smoke comes out and car doesn't have enough power, because there is not good compression

Aug 02, 2009 | 2005 Mazda RX-8

4 Answers

Freqent low oil in 2003 jetta stationwagon


Get the wright oil for the hot weather.Go to your dealers and they will advise you on what oil to use.It seems like you have the wrong grade of oil in the car for the hot condtions.hope that was helpfull.

Aug 02, 2009 | 2003 Volkswagen Jetta TDI

1 Answer

Car heats up, and seems to run out of water quick without leaking the water. I see the radiator but the only means of filling the radiator is the reservoir tank, and once you fill that one there is no more...


There is no radiator cap, the Lanos has what is called a "sealed cooling system", popular on newer model European cars and most Asian models, even some of the latest US made cars. You can squeeze and release the upper radiator hose repeatedly to "pump" some of the air out/water in.

The engine has to be leaking water somewhere. It could be a small leak that only leaks under pressure (when the car is hot) and the water is evaporating as fast as it leaks out. This kind of leak can be very hard to find! I had this problem on my daughter's 2001 Lanos until today, when I found the leak. A heater hose burst today while she was getting gas, luckily the car was stopped! It had been using about a tank full of water every month (about one quart or liter), but could find no leak. I suspected a leaking head gasket or cracked (which could be your problem), and was preparing to take the head off when she was on Christmas break from college. I'm glad that hose burts!

A leaking head gasket or cracked head is hard to detect. Most of the time there will only be a small leak when the engine is hot, and the small amount of water pulled into a cylinder is vaporised as the engine runs. There will be no water in the oil unless there is a large leak. Pull the oil dip stick and look under the oil fill cap. If there is a tan looking substance on either one there is water in the oil and you definitely have a cracked head or leaking head gasket. If it's just the gasket you're lucky -- the gasket will usually only leak if the engine has been run very hot (boiling over and then run a bit), and then the head will either crack or warp. A warped head can be repaired, but must be taken to a machine shop for repair. A machine shop can also check a head for cracks, as the cracks are usually too small to see, and usually only open and leak when the head is hot (normal engine operating temperature).

Sep 19, 2008 | 2001 Daewoo Lanos

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